2023-08-29 22:00:00
When subjected to various forces, be they normal, shear, torsion or bending, materials undergo deformations. When considering a specific structural section, we use the term “solicitation” to designate the resultant of these forces concentrated at the center of gravity of the section. When these forces are related to unit area, they are called “stresses”.
The linear elastic behavior of solids under tensile stress is defined by Hooke’s law. The hardness of a metal can be increased through work hardening, which allows hardening following plastic elongation.
Materials can exhibit homogeneity or isotropy. The longitudinal and transverse behavior with respect to the applied force is characterized respectively by the Young’s modulus and the Poisson’s ratio.
A classic example of the application of these fundamental notions is the calculation of the stresses on a fixed beam when it is subjected to an oblique force.
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